干旱区生态环境知识资源中心(Arid): 海南西部桉树林地土壤水分多时间尺度变化特征分析

Arid

	海南西部桉树林地土壤水分多时间尺度变化特征分析
其他题名	Dynamic characteristics of soil water in Eucalyptus plantation at different time scales in western Hainan
	陈丽艳; 王城城; 赵从举; 叶文伟
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2020
卷号	34 期号:1 页码:163-170
中文摘要	为研究不同时间尺度桉树林地土壤水分变化过程与特征,揭示其变化的形成机制。采用TDR与土钻法对海南儋州林场桉树林地0-150cm土层土壤水分和气象因子进行为期8年连续监测。结果表明: 1)日尺度晴天土壤水分基本不变,而雨天土壤水分随着降水量增加呈非线性增加;晴天土壤水分与相对湿度呈显著正相关( p < 0.01) ,而与太阳辐射、气温相关性不显著( p > 0.05);雨天土壤水分与降水呈显著正相关( p < 0.01) ,而与太阳辐射、气温、湿度相关性不显著( p > 0.05) 。2)月尺度土壤水分处于高值时段较长,最高值出现于雨季后期的9月,土壤含水量为10.27%;土壤水分最低值出现于旱季末期的4月,土壤含水量为7. 43%;月尺度土壤水分含量与降水量呈显著正相关( p < 0.01) ,而与太阳辐射、气温、湿度之间的相关性不显著( p > 0.05) 。3) 2010-2017年桉树林地降水量年际变化差异显著( p < 0.01) ,而不同土层土壤水分差异不显著( p > 0.05) ,0-150cm土层的土壤水分多年保持相对稳定。
英文摘要	In order to explore the change process and characteristics of soil water and their mechanism of formation in the Eucalyptus forests at different time scales,six Eucalyptus forest plots in Danzhou Forest Farm,Hainan, were selected to continuously monitor the meteorological factors and the soil water in 0-150cm soil layer for 8 years. The results showed that: 1) The soil water on the sunny day was stable while that on the rainy day increased nonlinearly with the increase of precipitation. On the sunny day,the soil water was significantly positively correlated with the relative humidity ( p < 0.01) ,whereas the correlations between the soil water and solar radiation, temperature were not significant ( p > 0.05). On the rainy day,there was a significant positive correlation between the soil water and the precipitation ( p < 0.01) ,but not the solar radiation,temperature and relative humidity ( p > 0.05). 2) The soil water was higher for a long period at the monthly scale,reaching the highest value of 10.27 % in the late rainy season ( September) ,and the lowest value of 7.43% at the end of the dry season ( April). At the monthly scale,the soil water was significantly positively correlated with precipitation ( p < 0.01) ,but not significantly correlated with solar radiation,atmospheric temperature and relative humidity ( p > 0.05). 3). Over the past eight years,the difference of annual rainfall was obvious ( p < 0.01) ,but the soil water in different soil layers did not show obvious difference( p > 0.05). The soil water remained relatively stable,which implied that Eucalyptus planting had small negative impact on soil water of 0-150cm soil layer at multi-year scale in the semi-humid and semi-arid regions of the tropics.
中文关键词	土壤水分 ; 时间变化 ; 气象因子 ; 桉树林地 ; 海南
英文关键词	soil water temporal changes meteorological factors Eucalyptus plantation Hainan
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6685710
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353546
作者单位	陈丽艳, 海南师范大学地理与环境科学学院, 海口, 海南 571158, 中国. 王城城, 海南师范大学地理与环境科学学院, 海口, 海南 571158, 中国. 赵从举, 海南师范大学地理与环境科学学院, 海口, 海南 571158, 中国. 叶文伟, 海南师范大学地理与环境科学学院, 海口, 海南 571158, 中国.
推荐引用方式 GB/T 7714	陈丽艳,王城城,赵从举,等. 海南西部桉树林地土壤水分多时间尺度变化特征分析[J],2020,34(1):163-170.
APA	陈丽艳,王城城,赵从举,&叶文伟.(2020).海南西部桉树林地土壤水分多时间尺度变化特征分析.干旱区资源与环境,34(1),163-170.
MLA	陈丽艳,et al."海南西部桉树林地土壤水分多时间尺度变化特征分析".干旱区资源与环境 34.1(2020):163-170.